Remove packaging/debian-multiarch

packaging/debian-multiarch/copyright

@@ -1,31 +0,0 @@
-This package was debianized by Inverse <support@inverse.ca> on
-Mon, 27 Jul 2009 10:57:51 -0400.
-
-It was downloaded from http://www.sogo.nu/downloads/backend.html
-
-Upstream Authors:
-
-    Inverse inc. <support@inverse.ca>
-
-Copyright:
-
-    Copyright (C) 2006-2010 Inverse inc.
-
-License:
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-The Debian packaging is (c) 2009, Inverse <support@inverse.ca> and
-is licensed under the GPL, see `/usr/share/common-licenses/GPL-2'.